I’m not sure. I suspect that TextSniper predates the feature on Mac.

On Mac (and iOS, too) recognized text is just treated as text. So on Mac, you just get a text selection/entry cursor (the “I-beam”), and you can select text for whatever action (copy, lookup, etc). On iOS it’s same, except no cursor on account of it being a touch interface. It’s sort of annoying on iOS with images that have a lot of text - double clicking an image to zoom has to be done with care, otherwise it selects text instead of zooming in.